3827161 has 4 divisors (see below), whose sum is σ = 4121572. Its totient is φ = 3532752.

The previous prime is 3827149. The next prime is 3827191. The reversal of 3827161 is 1617283.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 518400 + 3308761 = 720^2 + 1819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3827161 is a prime.

It is a super-2 number, since 2×3827161² = 29294322639842, which contains 22 as substring.

3827161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3827191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147186 + ... + 147211.

It is an arithmetic number, because the mean of its divisors is an integer number (1030393).

Almost surely, 2^3827161 is an apocalyptic number.

It is an amenable number.

3827161 is a deficient number, since it is larger than the sum of its proper divisors (294411).

3827161 is a wasteful number, since it uses less digits than its factorization.

3827161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294410.

The product of its digits is 2016, while the sum is 28.

The square root of 3827161 is about 1956.3131139979. The cubic root of 3827161 is about 156.4199865223.

The spelling of 3827161 in words is "three million, eight hundred twenty-seven thousand, one hundred sixty-one".